12n+12(n-3)=396

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Solution for 12n+12(n-3)=396 equation: 



12n+12(n-3)=396

We move all terms to the left:

12n+12(n-3)-(396)=0

We multiply parentheses

12n+12n-36-396=0

We add all the numbers together, and all the variables

24n-432=0

We move all terms containing n to the left, all other terms to the right

24n=432

n=432/24

n=18

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